ios - Alamofire 的 CompletionHandler

Question

我正在尝试返回响应JSON

static func getAllPersons(completionhandler:@escaping (Any) -> ()){
    let URL = baseURL + "api/person"
    Alamofire.request(URL).responseJSON {
        response in
        completionhandler(response.result.value as Any)
    }
}

但是如果我尝试将responseJSON存储在“res”中，它将不起作用:

var res: Any = ""
PersonResource.getAllPersons{ (result) in
    res = result
}
print(res)

致以诚挚的问候

Answer 1

response.result.value 是可选的，因此尝试返回 Any?。但这是更好的方法:

static func getAllPersons(completionhandler:@escaping ([String: Any]?, Error?) -> ()){
    let URL = baseURL + "api/person"
    Alamofire.request(URL).responseJSON {
        response in
        if let json = response.result.value as? [String: Any] {
                completionhandler(json, nil)
        }
        else if let error = response.result.error as Error? {
                completionHandler(nil, error)
        }
    }
}